The ISA 430 MKII AD from Focusrite is a stereo digital output card for the ISA 430 MKII channel strip. The stereo digital output formats include single/dual wire AES/EBU and S/PDIF from a 9-pin D-type connector with sample rates up to 192kHz. Appropriate cables for each format are required.

The ADAT Lightpipe and S/PDIF TOSLink ports are both stereo and operate at 24-bit resolution with up to 96kHz sampling rates. Wordclock I/O on BNC connectors extends the functionality of the expansion card.